linux-kernel - Re: [syzbot] BUG: RESTRACK detected leak of resources

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Date:   Mon, 4 Oct 2021 14:42:11 +0200
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     Doug Ledford <dledford@...hat.com>,
        syzbot <syzbot+3a992c9e4fd9f0e6fd0e@...kaller.appspotmail.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Leon Romanovsky <leon@...nel.org>,
        RDMA mailing list <linux-rdma@...r.kernel.org>
Cc:     linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] BUG: RESTRACK detected leak of resources

On Mon, 4 Oct 2021 at 12:45, syzbot
<syzbot+3a992c9e4fd9f0e6fd0e@...kaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit:    c7b4d0e56a1d Add linux-next specific files for 20210930
> git tree:       linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=104be6cb300000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=c9a1f6685aeb48bd
> dashboard link: https://syzkaller.appspot.com/bug?extid=3a992c9e4fd9f0e6fd0e
> compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
>
> Unfortunately, I don't have any reproducer for this issue yet.
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+3a992c9e4fd9f0e6fd0e@...kaller.appspotmail.com

+RESTRACK maintainers

(it would also be good if RESTRACK would print a more standard oops
with stack/filenames, so that testing systems can attribute issues to
files/maintainers).

> rdma_rxe: rxe-pd pool destroyed with unfree'd elem
> rdma_rxe: rxe-mr pool destroyed with unfree'd elem
> restrack: ------------[ cut here ]------------
> infiniband syz0: BUG: RESTRACK detected leak of resources
> restrack: Kernel PD object allocated by rds_rdma is not freed
> restrack: ------------[ cut here ]------------
>
>
> ---
> This report is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzkaller@...glegroups.com.
>
> syzbot will keep track of this issue. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.